A great white shark swims 22 feet below sea level. If the shark is 67.7 feet from the sailboat, what is the angle of
denression of the boat to the shark

x = 18 degrees

Step-by-step explanation:

Use tan to find the value of x

tan x = 22/67.7     Simplify

tan x = 0.3298      Take the negative of tan to find x

tan^-1 x = 18

step-by-step explanation:

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c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)